CN219282164U - Hydraulic system for engineering machinery - Google Patents
Hydraulic system for engineering machinery Download PDFInfo
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- CN219282164U CN219282164U CN202320167086.1U CN202320167086U CN219282164U CN 219282164 U CN219282164 U CN 219282164U CN 202320167086 U CN202320167086 U CN 202320167086U CN 219282164 U CN219282164 U CN 219282164U
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Abstract
The utility model relates to the field of engineering machinery and discloses a hydraulic system for engineering machinery, which comprises a mounting frame, wherein an oil tank is fixedly connected to the inner wall of the left side of the bottom of the mounting frame, an oil outlet pipe is fixedly connected to the center of the bottom of the oil tank, one end of the oil outlet pipe is fixedly connected to the left oil inlet of a filter tank, a first filter screen, a second filter screen and a third filter screen are sequentially arranged in the filter tank from left to right, a hydraulic cylinder body is fixedly connected to the center of the top of the mounting frame, oil inlets are respectively arranged at the upper end and the lower end of the right side of the hydraulic cylinder body, and the oil inlets are respectively fixedly connected to the two ends of an oil injection pipe. According to the utility model, substances such as debris impurities contained in hydraulic oil are removed through the first filter screen, the second filter screen and the third filter screen, so that the problem that the structures such as a pipeline, a conveying pump and a hydraulic cylinder body are blocked by the debris impurities is avoided, the normal use of a hydraulic system is ensured, and the maintenance cost is reduced.
Description
Technical Field
The utility model relates to the field of engineering machinery, in particular to a hydraulic system for engineering machinery.
Background
With the continuous development of society, the living standard of people is also remarkably developed along with the continuous improvement of the economic level, the technological level of China is also remarkably developed along with the rapid development of economy, so that the industrial level of China is also remarkably developed, an engineering mechanical hydraulic system is often used in the industrial application process of the engineering mechanical hydraulic system, and the engineering mechanical hydraulic system is formed by combining a hydraulic oil tank, a pump device and a control system, plays roles in transmitting pressure, lubricating and the like in the actual working process, and is widely applied by people in most industrial production and working processes due to the importance of the working process.
At present, the existing hydraulic system for engineering machinery has some defects when in use, the hydraulic system for engineering machinery has the problems that impurities are mixed in hydraulic oil to cause the blockage of a cylinder body and a pipeline in the use process, and the hydraulic system for engineering machinery is inconvenient to accurately control lifting and is easy to cause confusing hidden trouble in the use process, so that the hydraulic system for engineering machinery needs to be improved.
Disclosure of Invention
The utility model aims to solve the defects in the prior art and provides a hydraulic system for engineering machinery.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a hydraulic system for engineering machine tool, includes the installing frame, fixedly connected with oil tank on the bottom left side inner wall of installing frame, the bottom center department fixedly connected with oil outlet pipe of oil tank, the one end fixedly connected with of oil outlet pipe is in the left side hydraulic fluid port of rose box, the inside of rose box has set gradually first filter screen, second filter screen and third filter screen from left to right, the top center department fixedly connected with hydraulic cylinder body of installing frame, sliding connection has the piston rod in the top through-hole of hydraulic cylinder body, both ends all are provided with the oil inlet about the right side of hydraulic cylinder body, and oil inlet respectively fixedly connected with is at the both ends of filler pipe, the right side middle part fixedly connected with transfer line of filler pipe, one end fixedly connected with of transfer line is at the oil-out of delivery pump, both ends all are provided with the oil return opening about the left side of hydraulic cylinder body, and the first oil return pipe and the second oil return pipe of fixedly connected with respectively in the oil return opening, be provided with the third solenoid valve on the first oil return pipe, be provided with fourth solenoid valve on the second oil return pipe.
As a further description of the above technical solution:
the right oil outlet of the filter box is fixedly connected with one end of the conveying pipe, and the other end of the conveying pipe is fixedly connected with the oil inlet end of the conveying pump.
As a further description of the above technical solution:
the conveying pump, the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve are electrically connected with the PLC, and the bottoms of the PLC and the conveying pump are fixedly connected to the top of the mounting frame.
As a further description of the above technical solution:
the left ends of the first oil return pipe and the second oil return pipe are fixedly connected to the right side of the return pipe, and the bottom end of the return pipe penetrates through the top of the mounting frame and is fixedly connected to the top oil inlet of the oil tank.
As a further description of the above technical solution:
the bottom fixedly connected with closing plate of piston rod, the outside of closing plate is all sliding connection on the inner wall of hydraulic cylinder body.
As a further description of the above technical solution:
the sealing gasket is fixedly connected to the inner wall of the top of the hydraulic cylinder body, a through hole is formed in the center of the sealing gasket, and the size of the through hole is matched with that of the piston rod.
As a further description of the above technical solution:
the bottom fixed connection of rose box is on the bottom inner wall of installing frame, the bottom of first filter screen, second filter screen and third filter screen is all fixed connection on the bottom inner wall of rose box.
The utility model has the following beneficial effects:
1. according to the utility model, firstly, hydraulic oil in the oil tank enters the filter tank under the action of the delivery pump, and then sequentially passes through the first filter screen, the second filter screen and the third filter screen from left to right after entering the filter tank, and the first filter screen, the second filter screen and the third filter screen can filter the passing hydraulic oil, so that substances such as debris impurities contained in the hydraulic oil are removed, the problem that the structures such as a pipeline, the delivery pump and a hydraulic cylinder body are blocked by the debris impurities is avoided, the normal use of a hydraulic system is ensured, and the maintenance cost is reduced.
2. According to the hydraulic cylinder, the PLC is used for inputting the instruction of opening the first electromagnetic valve and the fourth electromagnetic valve and closing the second electromagnetic valve and the third electromagnetic valve, hydraulic oil enters the upper part of the interior of the hydraulic cylinder body, so that the piston rod drives the sealing plate to move downwards to extrude hydraulic oil below the sealing plate to be discharged into the oil tank from the fourth electromagnetic valve, the PLC is used for inputting the instruction of opening the second electromagnetic valve and the third electromagnetic valve and closing the first electromagnetic valve and the fourth electromagnetic valve, so that the piston rod is conveniently driven to move upwards, the function of accurately controlling lifting is realized, the problem that a hydraulic system cannot be used due to confusion is solved, the upper layer of hydraulic oil and the lower layer of hydraulic oil are isolated through the sealing plate, the problem of hydraulic oil confusion is avoided, the sealing property is improved through the sealing gasket, and the hidden danger of leakage is avoided.
Drawings
FIG. 1 is a perspective view of a hydraulic system for a work machine according to the present disclosure;
FIG. 2 is a rear view of a hydraulic system for a work machine according to the present disclosure;
FIG. 3 is a front cross-sectional view of a filter box for a hydraulic system of a construction machine according to the present utility model;
fig. 4 is a front cross-sectional view of a hydraulic cylinder of a hydraulic system for a construction machine according to the present utility model.
Legend description:
1. a mounting frame; 2. an oil tank; 3. an oil outlet pipe; 4. a filter box; 5. a first filter screen; 6. a second filter screen; 7. a third filter screen; 8. a delivery tube; 9. a transfer pump; 10. an infusion tube; 11. a filler pipe; 12. a first electromagnetic valve; 13. a second electromagnetic valve; 14. a hydraulic cylinder; 15. a piston rod; 16. a first oil return pipe; 17. a second oil return pipe; 18. a return pipe; 19. a third electromagnetic valve; 20. a fourth electromagnetic valve; 21. a PLC controller; 22. a sealing plate; 23. and a sealing gasket.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," "third," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally coupled, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1-4, one embodiment provided by the present utility model is: the hydraulic system for engineering machinery comprises a mounting frame 1, an oil tank 2 is fixedly connected to the left inner wall of the bottom of the mounting frame 1, an oil outlet pipe 3 is fixedly connected to the center of the bottom of the oil tank 2, one end of the oil outlet pipe 3 is fixedly connected to the left oil inlet of a filter tank 4, a first filter screen 5, a second filter screen 6 and a third filter screen 7 are sequentially arranged in the filter tank 4 from left to right, a hydraulic cylinder 14 is fixedly connected to the center of the top of the mounting frame 1, a piston rod 15 is slidably connected in a through hole in the top of the hydraulic cylinder 14, oil inlets are respectively arranged at the upper end and the lower end of the right side of the hydraulic cylinder 14, the oil inlets are respectively fixedly connected to two ends of an oil injection pipe 11, an infusion pipe 10 is fixedly connected to the middle of the right side of the oil injection pipe 11, one end of the infusion pipe 10 is fixedly connected to an oil outlet of a conveying pump 9, the left upper and lower ends of the hydraulic cylinder body 14 are respectively provided with an oil return port, the oil return ports are respectively and fixedly connected with a first oil return pipe 16 and a second oil return pipe 17, the first oil return pipe 16 is provided with a third electromagnetic valve 19, the second oil return pipe 17 is provided with a fourth electromagnetic valve 20, firstly hydraulic oil in the oil tank 2 enters the filter tank 4 under the action of the delivery pump 9, the hydraulic oil sequentially passes through the first filter screen 5, the second filter screen 6 and the third filter screen 7 from left to right after entering the filter tank 4, the first filter screen 5, the second filter screen 6 and the third filter screen 7 can filter the passing hydraulic oil, thereby removing substances such as debris impurities contained in the hydraulic oil, avoiding the problem that the structures such as pipelines, the delivery pump 9 and the hydraulic cylinder body 14 are blocked by the debris impurities, ensuring the normal use of the hydraulic system, reducing the maintenance cost, the PLC 21 inputs the instruction of opening the first electromagnetic valve 12 and the fourth electromagnetic valve 20 and closing the second electromagnetic valve 13 and the third electromagnetic valve 19, hydraulic oil enters the upper part of the inside of the hydraulic cylinder 14, so that the piston rod 15 drives the sealing plate 22 to move downwards to extrude the hydraulic oil below to be discharged into the oil tank 2 from the fourth electromagnetic valve 20, and the PLC 21 inputs the instruction of opening the second electromagnetic valve 13 and the third electromagnetic valve 19 and closing the first electromagnetic valve 12 and the fourth electromagnetic valve 20, so that the piston rod 15 is conveniently driven to move upwards, the function of accurately controlling lifting is realized, and the problem that a hydraulic system cannot be used due to confusion is solved.
The right side oil-out fixed connection of rose box 4 is in the one end of conveyer pipe 8, the equal fixed connection of the left end of first time oil pipe 16 and second time oil pipe 17 is on the right side of back flow 18, the top of back flow 18 and fixed connection are at the top oil inlet of oil tank 2, bottom fixedly connected with closing plate 22 of piston rod 15, the equal sliding connection in the outside of closing plate 22 is on the inner wall of cylinder block 14, the problem of two-layer hydraulic oil about through closing plate 22 isolation appears, the equal fixed connection has sealed pad 23 on the top inner wall of cylinder block 14, the center department of sealed pad 23 is provided with the through-hole, and the size of through-hole phase-lock is with the size of 15 and is convenient for accurately control hydraulic system, the accuracy of operation has been improved, the equal fixed connection of left end of first time oil pipe 16 and second time oil pipe 17 is on the right side of back flow 18, the bottom of back flow 18 runs through the top of installing frame 1 and fixed connection at the top oil inlet of oil tank 2, the bottom fixedly connected with closing plate 22 of piston rod 15, the equal sliding connection is on the inner wall of cylinder block 14, avoid appearing the problem of two-layer hydraulic oil, the top inner wall of cylinder block 14 is last fixed connection has sealed pad 23, the through-hole size of sealed pad 23, and size of the size of through-lock 5 is improved, the size of piston rod 15 is matched filter screen 5, the filter screen 5 is fixed on the bottom 6, the filter screen 5 is connected to the filter screen 5, the filter screen is fixed on the bottom of the bottom 6, the filter screen is connected to the filter screen is fixed to the bottom 6, the filter screen is connected through the bottom 6.
Working principle: firstly, hydraulic oil in the oil tank 2 enters the filter tank 4 under the action of the delivery pump 9, the hydraulic oil enters the filter tank 4 and sequentially passes through the first filter screen 5, the second filter screen 6 and the third filter screen 7 from left to right, the first filter screen 5, the second filter screen 6 and the third filter screen 7 can filter the passing hydraulic oil, so that substances such as debris impurities contained in the hydraulic oil are removed, the problem that the structures such as a pipeline, the delivery pump 9 and the hydraulic cylinder 14 are blocked by the debris impurities is avoided, normal use of the hydraulic system is guaranteed, maintenance cost is reduced, a command for opening the first electromagnetic valve 12 and the fourth electromagnetic valve 20 and closing the second electromagnetic valve 13 and the third electromagnetic valve 19 is input through the PLC 21, the hydraulic oil enters the upper part of the inside of the hydraulic cylinder 14, the hydraulic oil drives the sealing plate 22 to move downwards to extrude the hydraulic oil below from the fourth electromagnetic valve 20 into the oil tank 2, and a command for opening the second electromagnetic valve 13 and the third electromagnetic valve 19 and closing the first electromagnetic valve 12 and the fourth electromagnetic valve 20 is input through the PLC 21, and the upward movement of the piston rod 15 is convenient to be driven.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.
Claims (7)
1. Hydraulic system for a construction machine, comprising a mounting frame (1), characterized in that: the oil tank is characterized in that an oil tank (2) is fixedly connected to the left inner wall of the bottom of the mounting frame (1), an oil outlet pipe (3) is fixedly connected to the bottom center of the oil tank (2), one end of the oil outlet pipe (3) is fixedly connected to a left oil inlet of the filter tank (4), a first filter screen (5), a second filter screen (6) and a third filter screen (7) are sequentially arranged in the filter tank (4) from left to right, a hydraulic cylinder body (14) is fixedly connected to the top center of the mounting frame (1), a piston rod (15) is connected to the inner side of a through hole in the top of the hydraulic cylinder body (14) in a sliding manner, oil inlets are respectively and fixedly connected to two ends of the right side of the hydraulic cylinder body (14), an infusion pipe (10) is fixedly connected to the right side middle of the oil inlet pipe (11), oil return ports of the infusion pipe (10) are respectively and fixedly connected to the left oil outlet of the delivery pump (9), oil return ports are respectively arranged at the upper end and the left side of the hydraulic cylinder body (14), an oil return port is respectively, an oil return pipe (16) and an electromagnetic valve (17) are arranged on the first oil return pipe (17).
2. A hydraulic system for a construction machine according to claim 1, wherein: the right oil outlet of the filter box (4) is fixedly connected with one end of a conveying pipe (8), and the other end of the conveying pipe (8) is fixedly connected with the oil inlet end of a conveying pump (9).
3. A hydraulic system for a construction machine according to claim 1, wherein: the conveying pump (9), the first electromagnetic valve (12), the second electromagnetic valve (13), the third electromagnetic valve (19) and the fourth electromagnetic valve (20) are electrically connected with the PLC (21), and the bottoms of the PLC (21) and the conveying pump (9) are fixedly connected to the top of the mounting frame (1).
4. A hydraulic system for a construction machine according to claim 1, wherein: the left ends of the first oil return pipe (16) and the second oil return pipe (17) are fixedly connected to the right side of the return pipe (18), and the bottom end of the return pipe (18) penetrates through the top of the mounting frame (1) and is fixedly connected to the top oil inlet of the oil tank (2).
5. A hydraulic system for a construction machine according to claim 1, wherein: the bottom end of the piston rod (15) is fixedly connected with a sealing plate (22), and the outer sides of the sealing plate (22) are both in sliding connection with the inner wall of the hydraulic cylinder body (14).
6. A hydraulic system for a construction machine according to claim 1, wherein: the hydraulic cylinder is characterized in that a sealing gasket (23) is fixedly connected to the inner wall of the top of the hydraulic cylinder body (14), a through hole is formed in the center of the sealing gasket (23), and the size of the through hole is matched with that of the piston rod (15).
7. A hydraulic system for a construction machine according to claim 1, wherein: the bottom of rose box (4) is fixed connection on the bottom inner wall of installing frame (1), the bottom of first filter screen (5), second filter screen (6) and third filter screen (7) is all fixed connection on the bottom inner wall of rose box (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320167086.1U CN219282164U (en) | 2023-01-18 | 2023-01-18 | Hydraulic system for engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320167086.1U CN219282164U (en) | 2023-01-18 | 2023-01-18 | Hydraulic system for engineering machinery |
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| Publication Number | Publication Date |
|---|---|
| CN219282164U true CN219282164U (en) | 2023-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320167086.1U Active CN219282164U (en) | 2023-01-18 | 2023-01-18 | Hydraulic system for engineering machinery |
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| CN (1) | CN219282164U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117267209A (en) * | 2023-09-19 | 2023-12-22 | 马鞍山市辉煌机械设备制造有限公司 | Hydraulic cylinder with multistage telescopic function |
-
2023
- 2023-01-18 CN CN202320167086.1U patent/CN219282164U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117267209A (en) * | 2023-09-19 | 2023-12-22 | 马鞍山市辉煌机械设备制造有限公司 | Hydraulic cylinder with multistage telescopic function |
| CN117267209B (en) * | 2023-09-19 | 2024-04-02 | 马鞍山市辉煌机械设备制造有限公司 | Hydraulic cylinder with multistage telescopic function |
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